Wellington regional coroner Ian Smith queried today whether New Zealand's starting age of 16 for pilot training was set too low.
However, CAA spokesman John McKinlay said it was in line with international practice and up to the judgement of a qualified and competent flight instructor.
The question came on the first morning of the inquest into the deaths of two teenagers and a 30-year-old in a mid-air crash above Paraparaumu.
Those who died were the solo pilot of a Cessna light plane, Bevan Hookway, aged 17, and the occupants of a Robinson helicopter - student pilot James Taylor, 19, and the experienced rescue pilot testing him, David Fielding, 30.
Bevan Hookway, who was studying aviation, was sufficiently skilled and competent to fly solo, the coroner was told.